fowble



0. H. FOWBLE.

WRENCH. APPLICATION FILED JUNE 21| |920.

Patented May 31, 1921..l

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Iitiien of the Unitedv States, residing at 'unt-in on,` inl he -v countyof Cebelljend e'pf wrenc wherein the movablefmein fis provided with ashanli in guided con-V iehtion with and lmoviible in parallel rela tibiito. the handle bar or shank of the mein mountingt eA supplementalstation 1 tennessee, eombinmon end segment ,bipertshereinafter fullydescribed "and yiiiiijying ydrawings,jin which: i '-Eigii're 1 is an edVview lofii wrench c ontflcted in" *decor-dance with my invention. Fig. 2is, a. side elevation of the seine.

Fig 3 isginl opposite edge view of the wrench from that shown inl ig. 1.

Fig. i4:4 isv e detail section` teken substantall online 4-4 of, Fig. 3.

Tiie wrenchV comprises e. handle bar or mein shank 1 upon whichismounted a. guide sleeve 2 in whih the threaded shank 3 of a movable''swf member 4 is slidably mounted. `Thet reads of the 'shank 3 areengaged by the threads of e; rotary nut 5 journeled-in e slotted pVrtion 6 of the slevwheneby the moveb e 111W member 4 may be iid'iistedwith relation the fixed jaw 7 of e handle bar or main shanlr 1.

The. working face of the movable pivvA members is suitebly im proper ei::surface 9,

sind jewV proper 8 being provided with -a.,-lug or pioJection 10 to fitwithin-a recess .4 K /jewinember 4 "und"seeuredthereinby means ofafastening il'lscrew or the like 12, whereby the jaw enit 8 isdetakzheblymounted, allowing a .somme s'rATrs PATENT, OFFICE;-

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" Seeication ot Letters Patent, Patlified 4li/[ay 31,1921. pentium .inednine 21, iseof serial inT 390,403. l

,enda new one conveniently rioroitheinterior thereof, and one obfis may!been plied for efficientl use on a.

i5 if shoulder 18'is1arriinged in Vsi'linement witlim 'extends inwardlyofthe forward or guiding? inwerd movement thereof. The ripper 13V formed-to receive s. A toothed or serrated broken or worn j'aw element to' eremoved substituted in itsliiee.. A lhe jaw element issrranged forcoperation with a gripper 'or jew-V element 13 60 carried byfthe fixedjaw member 7.V This jewv elementil liaise working face inclined at enen.le to thepl'ane of thetootlied sur. face 9 o the jew Velement 8` andprovided with serrtions or teeth 14 extending in 'one 65 direction, saidtoothed surface-14 being -arranged for eo` eration withthe toothedsurface of the, ]aw member 8 vfor exteriorly gripping pipes or otherobjects.. l

yThe .gripper or jaw Velement 13 is fitted y70 to slide in a directiontoward end from the shank member ,3.in aguidewey 15" formed by cuttingVsway a. portion fof the jew meinber 7, said-guidewey,beingcompleted bythe forwardly extending portions oieside plates A 16 formed integrallywith the sides of the4 sleevei'and extending on opposite sides" of thebar orfshiink 1 and rivetedl orotherw'ise' secured thereto, `ausindicated et V17. By this: construction the sleeveQ is .mountediii,po8..0 sition uponthe shrink 1 sind the'sides of the guidewey 1'5.simultaneously. formed.4

VThe jew.; member 7 is provided at one end of theguideway lwith a lug 18forming a stop shoulder to limit the inward move 85. ment olthei'gripper 13, which lug `or n. shoulder 19 on said gripper, The `lugedges of the guide plates 16 and is formed 90 with a socket or recess 20receiving one end of a4 coiled spring 21, bearing at its o posite endageinst'the shoulder 19 and ten ing to hold the gripper 13 at the limitof its outwerd movement while permitting yielding is provided withn an'elongate slot 22 throngh'whieh passes a pin 23 extendingV across theguidewey 15 between the ide plates-16, and whereby the bodiy 'o the 100gripper is guided in its inward en outwardA sliding movements. Thetoothed surface of the gripper 13 is desirably prolonged by the revisionoe lug or extension 24 at the inner end thereof, said lug lying outsideof 106 seid shoulder and beintgmovable in contant i with the outer faceo the lug 18 and bei tween the `adjacent@portions ef ythe guide plates16, whereby a furtliei` guiding connection is provided to insuremovement of 110 l the gripper 13 in a direct line and without pivotalaction on the pin 23 liable to cause a defective or insecure grippingengagement between the gripper and the object to be grasped between thesame and the toothed surface of theY jaw element 8. By the constructiondescribed it will be seen that the spx-in 21 is concealedand housed andprotecte 4from the access of dust and dirt and from liability of injury;and is also dis- 'posed at a point where itdoes not interfere with thefull and free-admission of the object to be lgripped between thestationary 4 and movable jaws.

The sleeve 2cal'ries upon its crown por-l tionv a semicircularstationary grip 25 for coperation with a jmovable gripper 26 piv-'otallymounted upon a pin or stud 27 carried by the jaw member .4, saidgripper-s 25 and 26 being adjustable with `relation to each otherin anobvious manner. These grippers 25 and 26, are adapted for engagementwiththe interior of a ipe -or other tubular object, andzeach of saidgrippersis provided upon opposite sides ofthe center l of its curvedface with sets of teeth 28 and 29 projecting in opposite directions, soas .to adapt the grippers for a ripping action in either direction ofpivote? movement of the wrench. The gripper 25 may be fixed in anysuitable manner to the sleeve 2, but the gripperA 26 is ivotallymounted`upon the pinor stud 2 so as to have-lan eccentric gripping action whenthe wrench is ivotvally adjusted or revolved in one direction or theother, whereby the'pipe, tube or similar'l objectmay be rmly' gri pedand revolved ermit it to be screwe or unscrewed, as wil be readilyunderstood. .The construction described enables' a wrench of thewtypedisclosed to be manufactured in Aa simple manner and provided with :jawsor grippers to engage either the exterior or interior of a pipe or otherobject a) be' held 'or rotated.

A Eromthe foregping description, taken in yconnection with t ments 8 and13 so that newrgrippers ma Y ones, and 1n whic be substituted for ol andconvenient the gri per' 13 is effectually guided anfdits` control ing sping securely housed andVpro# tected from'lniur Havin thus fil tion, I caim: Y

llyV described the. inveni i A wrench comprising a handle, 'baron mainshank havingfan obliV ue end portion forming a ide surface an providedwith a socketed .4 ugfprojecting beyond the line of said guide sur etace at the inner end thereof,

a sleeve having side plates secured to the j handle bar withdportiopsprojecting at o site sides beyon y saidvguide surface an and formingtherewith a guideway of somewhat greater de th than said lug, a movablejaw havingA a s ank slidable in the. sleeve, means for adjusting thesame, arfsupplemental jaw slidably mounted in thelguldewa able betweenthe side plates outer side of the lug, and a coiled spring at oneend inthe cketoi' '9A l. bearing atitsopposi-` end a.

ner end of the supplemental jaw? mal1y` force saidjaw outward.

at its inner end `a 1e uced extensmn mov-i and in guidedvconnectionwith'saii/fl'li guide surface and side lates, said jaw hav`In testimony whereof I aiix V1re? oscar R. rowrinif-l"

